Instant visual gratification.- These rocks have been in our grow-out tanks for many many months (up to 2 years) and are fully encrusted with crustose and coralline algae. These rocks are simple amazing! However, they do NOT have the nutrient scrubbing and slow-release of calcium benefits of our Standard eco-Live-Rock. They DO continue to leach beneficial magnesium as the limestone slowly dissolves.

Guaranteed Aptasia-free and mantis-free!
Because we grow our rock in a controlled environment. We can guarantee
that it will come free of pests and harmful organisms. This is a huge
advantage!